Hp media center pc won't turn on after electriticy went off & came back up & use surge protecter. LED on back of pc comes on & then off very quickly when power cable is plugged. any ideas?

Is it plugged into a surge protector? When the power comes back on to a lot of residents at the same time, a power voltage spike occurs that can damage electronics. All items that have any electronic circuits, need to be protected by a surge protector. Surge protectors do not protect against lightning strikes.

The problem is the power supply it will need to be replaced.

It is possible that either the power supply or the motherboard is faulty.
Try swapping out the power supply (borrow one if you can) and if the PC power LED does not light up or the PC boot up, then you need a new PC.
I suggest you get a surge protection power board and connect your new computer to this surge protection power board. It will protect your computer from power surge problems.

The power module has a safety feature inside that protects the product during a power surge. If you experienced a recent power surge, the power module might need to be reset. Use the following steps to reset the power module.

1. Unplug the power supply from the rear of the product.
2. Unplug the power cord from the electrical outlet, power strip, or surge protector.
3. If the product uses a power module with a detachable power cord, disconnect the cord from the power module.
4. Wait 15 seconds.
5. Reconnect the power cord to the power module.
6. Plug the power cord back into the electrical outlet. Do not use a power strip or surge protector.
7. Check to see if the power module has an LED.
   • If the power module does not have an LED, continue to the next step.
   • If the power module has an LED, check to see if the LED lights up.
     • If the LED does not light up, contact HP to replace the power module. To buy a compatible power module, right-click the following link, How to Buy HP , and then click Open in New Window .
     • If the LED lights up, continue to the next step.

Step two: Test the power on the All-in-One Follow these steps to test the power on the product.

1. Reconnect the power supply to the rear of the product.
2. Press and quickly release the Power button ( ) to start a Power On/Off cycle. Do not hold the button down. Figure 1: Press and quickly release the Power button If you press and hold the Power button too long, the product might turn on and then off without restarting. If this happens, press and quickly release the Power button ( ) again.

• If these steps resolved the issue , there is no need to continue troubleshooting.
• If the issue persists , see the next step.

Solution four: Test the power with a compatible power cord from a different product If you have another available power cord that is compatible with your product, use the alternate cord to repeat the steps in Solution three: Reset the power module and test the power .

• If the product turns on with the alternate power cord, the original power cord caused the issue. Contact HP to replace the power cord. Right-click the following link, How to Buy HP , to buy a compatible power cord.
• If the product does not turn on with the alternate power cord, continue to the next step.

Solution five: Service the HP product If you have completed all the steps listed above and are still experiencing a problem, service the product.

If you need more help come back.

Post / thumbs / testimonial are welcome!

to start with some try to change the CMOS battery that is inside the PC and is look like a dime.

Post back!

try removing all power cables of your computer that are connected to the surge protector. reset the surge protector. wait for about 5 minuets before you turn on the surge protector. then plug all cables that your remove from your computer the turn on the computer.

SOLUTION 1 If the HP All-in-One is turned off, press the On button to turn the unit on.

Unplug the power cord from the back of the HP All-in-One.

Wait 15 seconds.

Plug the power cord back into the HP All-in-One.

Turn on the HP All-in-One by pressing the On button.SOLUTION 2: Reset the power module and test the power Step one: Reset the power moduleThe power module has a safety feature inside that protects the product during a power surge. If you experienced a recent power surge, the power module might need to be reset. Use the following steps to reset the power module.

1. Unplug the power supply from the rear of the product.
2. Unplug the power cord from the electrical outlet, power strip, or surge protector.
3. If the product uses a power module with a detachable power cord, disconnect the cord from the power module.
4. Wait 15 seconds.
5. Reconnect the power cord to the power module.
6. Plug the power cord back into the electrical outlet. Do not use a power strip or surge protector.
7. Check to see if the power module has an LED.
   • If the power module does not have an LED, continue to the next step.
   • If the power module has an LED, check to see if the LED lights up.
     • If the LED does not light up, contact HP to replace the power module. To buy a compatible power module, right-click the following link, How to Buy HP , and then click Open in New Window .
     • If the LED lights up, continue to the next step.

Step two: Test the power on the All-in-OneFollow these steps to test the power on the product.

1. Reconnect the power supply to the rear of the product.
2. Press and quickly release the Power button ( ) to start a Power On/Off cycle. Do not hold the button down.

On HP computers, I believe that this means that the power supply or the motherboard is bad. I assume that the outage was due to the thunderstorm and you may have received a surge. In your manual, there should be diagnostic light codes where they will outline the exact meaning. Again, to the best of my knowledge, this means that there is a bad power supply or a motherboard.

If you need further help, reach me via phone at https://www.6ya.com/expert/jarrad_11786570be7a2abd

sounds like the surge protector didn't protect. I would change the power supply.

OK FIRST A POWER SURGE PROTECTOR WILL ONLY PROTECT YOU 7 % OF THE TIME, WHICH YOU JUST REALIZED. SO YOU NEED TO BUY A BATTERY BACKUP ALSO KNOWN AS A UPS.... I CANNOT STRESS THIS ENOUGH. BRING YOUR PC TO BEST BUY AND THEY WILL TEST YOUR POWER SUPPLY, IF IT TESTS OUT OK THEN YOU BLEW SOMETHING IN YOUR MOTHERBOARD. GET A BATTERY BACKUPS/UPS!!!!!!!!!!!!!!!